Dicarbonyl-dihydrazones



United States Patent 3,378,554 DICARBONYL-DIHYDRAZONES Walter Piischel and Hans Schellenberger, Leverkusen, Germany; Karl Liiflier, deceased, late of Leverkusen, Germany, by Monika Laux nee Liitfler, heir, Berlin, Germany, Klaus-Richard Liifller and Claudia Maria Liitfl-er, minor heirs, and Beate Elisabeth Liifiier, heir and legal representative of minor heirs, Leverkusen, Germany; and Othmar Wahl, Leverkusen, and Willibald Pelz, Baden-Baden, Germany, assignors to Agfa Aktiengesellschaft, Leverkusen, Germany, a corporation of Germany No Drawing. Continuation-impart of application Ser. No. 858,052, Dec. 8, 1959. This application Apr. 6, 1965, Ser. No. 446,795

12 Claims. (Cl. 260-240) The present invention is a continuation-in-part of application Ser. No. 858,052, filed Dec. 8, 1959, now US. Patent 3,186,840 issued June 1, 1965, and relates to a class of compounds as described herein below. In particular, this invention is particularly directed to compounds found useful in the color photographic art for the production of direct positive dyestulf images.

The dyes formed in a conventional color photographic process do not generally conform to theoretical standards. For example, magenta dyestuffs have an appreciable secondary absorption in the blue range, while cyan dyestufls have secondary absorptions in the green and blue ranges.

The compounds of the present invention, however, have been found particularly useful in reacting with oxidation or development products of color developers to form substantially colorless coupling products. As such, they are very suitable for the production of colored direct positive images.

The present compounds are perhaps best described as a class of dicarbonyl dihydrazones having the formula which are fast to diffusion and contain at least one long chain aliphatic group such as an alkyl group of 6-20 carbon atoms, preferably 10-20 carbon atoms.

Of interest are compounds of the above formula in which R and R are defined individually as hydrogen, alkyl having up to 20 carbon atoms, pheny1,naphthyl, benzyl and a heterocyclic radical such as a furyl, thienyl, coumaronyl, thionaphthenyl, and pyridyl ring moieties.

R and R together with the connecting carbon atoms may be further defined as a -6 membered ring such as an isocyclic or heterocyclic moiety. Compounds of this type include a dihydrazone of cyclohexanedione. The heterocyclic moiety may further include benzofurane and indolyl groups as well.

R and R are defined individually as aromatic groups such as a phenyl and a naphthyl, also a 5-6 membered heterocyclic moiety such as a pyridyl, benzthiazolyl, thiazolyl, oxazolyl, benzimidazolyl, pyrazolyl and thienyl. Possible substituents on the aromatic groups include, for example, the corresponding sulfo, sulfonamido, carboxyl, carbamoyl, esterified carboxy, preferably esterified with aliphatic alcohols having up to 20 carbon atoms, an alkyl of 1-20 carbon atoms, halo groups such as chloro or bromo, also cyano, nitro, hydroxy, and alkoxy, the alkyl moiety of which contains up to 18 carbon atoms, aroxy such as phenoxy, arylsulfonyl such as phenylsulfonyl, aryl such as phenyl or naphthyl, aralkyl such as benzyl or phenylethyl, also heterocyclic groups, and amino groups, which, in turn, may be further substituted with an alkyl having up to 18 carbon atoms, an aryl, preferably phenyl, or an acyl group, preferably an acyl derived from aliice phatic monoor dicar-boxylic acids having 2-20 carbon atoms, or benzoyl, when desired.

For the purpose of the present invention at least one of R R R and R however, must be further substituted by a member such as an alkyl of 6-20 carbon atoms, an alkoxy of 6-20 carbon atoms or an alkyl amino having an alkyl group containing up to 20 carbon atoms when R in the above formula is defined other than alkyl group having 6-20 carbon atoms.

Compounds having the formula R2I-O=N-NHR4I are found particularly useful when incorporated in silver halide emulsion layers. In the above formula, R and R may include hydrogen and alkyls of 6-20 carbon atoms, also a phenyl, naphthyl, benzyl and also heterocyclic members, as defined in R and R (supra).

R and R may also be combined as a 5-6 membered ring inclusive of an isocyclic or heterocyclic moiety as in R and R provided at least one of R and R incorporates an alkyl or alkoxy substituent of 6-20 carbon atoms; R, and R include aromatic groups particularly substituted aryl groups having substituents such as sulfo, sulfonamido, car-boxyl, carbamoyl, esterified carboxyl such as alkyl esters, having up to 20 carbon atoms in the alkyl groups, halo, cyano, nitro, hydroxy, alkoxy, phenoxy, phenyl sulfonyl, aryl, aralkyl, amino, and alkyl substituted amino aryls. Also included are aryl substituted amino aryls, sulfomethyl-aryls, alkyl aryls having alkyl groups containing up to 20 carbon atoms and a heterocyclic group as definedin R and R A further useful sub-group of compounds within the present invention is represented by the following formula and 'N-phenyl alkyl carbamyl; the R group is also defined together with the -o-0H II II moiety as a benzofurane, indolyl or alk a 0 Q SOaH, and -o wherein alk is an alkyl, at least one of R and R containing an alkyl substituent of 6-20 carbon atoms where Ra-C-CH II II is defined in combination as a ringed member.

The compounds, as above described, may be obtained, for instance, by reacting a 1,2-dicarbonyl compound with a hydrazine to form the corresponding dihydrazone, hereinafter referred to simply a an osazone. Depending on whether (a) a monohydrazone is prepared by reacting one mol of dicarbonyl compound with one mol of a hydrazine and then reacting with a second mol of a hydrazine, or (b) one mol of dicarbonyl compound is directly reacted with two mols of a hydrazine, it is possible to obtain osazones corresponding to the above general formulae with different or identical hydrazine radicals. It is also possible to obtain the osazone by producing the monoxime of the dicarbonyl compound and reacting this oxime with a hydrazine to produce an oximehydrazone, and thereafter reacting this with a second mol of another hydrazine while splitting off hydroxylamine.

Furthermore, a-oxycarbonyl compounds such as a-oxyaldehydes or u-oxyketones can be reacted with excess hydrazine derivative to form hydrazones in known manner, or starting from the hydrazones of the a-oxycarbonyl compounds, mixed osazones can be obtained with excess hydrazine. It is often advisable to use the u-halogenocarbonyl compounds instead of the a-oxycarbonyl compounds. Carbonyl compounds having a methylene group adjacent to the carbonyl group can also be coupled with a diazonium salt to form the monohydrazone of the corresponding diketone according to the equations:

I NH

It is often advisable to activate the coupling capacity in the a-methylene carbonyl compounds by substituting with negative groups. Such groups are, for example, alkylcarbonyl and phenylcarbonyl radicals (COOR) in which R is alkyl or phenyl cyano and halogen. In the case of the cyano and the alkoxycarbonyl radicals (COOR) these groups can easily be split off again, so that, for example, when alkyl-carbonylacetic acid derivatives are used in accordance with the following equation:

R CO CH COOH +XN=N--R CO R.-o-(|3=NNHR=+NH2NHR R1-(l:=N-NHR I-I HC=NNHRa osazones are obtained in more convenient manner than by the reaction in stages of the corresponding carbonyl compounds with two different hydrazines.

By reaction of the osazones of a-ketoaldehydes with diazonium compounds, it is possible in accordance with the following equation:

Rz- =N--NH--R4 I to obtain osazones of diketones. This method is of interest for the production of osazones of heterocyclic aromatic wdiketones. The dicarbonyl compounds R COCOR themselves are also readily obtainable to known methods.

The following examples are intended to illustrate more fully the preparation of dihydrazones of the type found useful in the present invention, but are not to be construed as a limitation upon the scope thereof.

Example 1 (a) 17 g. of p-sulphanilic acid are dissolved in 100 cc. of 2 N-sodium hydroxide solution and 60 cc. of water, 7 g. of sodium nitrite are added, and the solution is introduced at 0 C. into a mixture of 30 cc. of concentrated hydrochloric acid and 30 cc. of water. Stirring is continued for 15 minutes, the pH value is adjusted to between 5 and 6 with about 15 g. of sodium acetate, and a mixture is poured into the solution of 36 g. of stearolylacetic acid ethyl ester and 30 g. of sodium acetate in 600 cc. of methanol. Stirring is continued for another 30 minutes, the precipitate is filtered by suction, washed with dilute methanol and dried in vacuo at room temperature. Yield: 50 g. of a-(p-sulphoazobenzene)-stearoyl acetic acid ethyl ester (Formula I hereinafter).

(b) 30 g. of this compound are introduced into a solution of 30 g. of sodium hydroxide in 500 cc. of water and heated to 60 C., whereupon it dissolves. The mixture is boiled for another 20 minutes and the still hot solution is neutralized with glacial acetic acid. 23 g. of 4-methoxy-3-sulphophenyl hydrazine are then added, boiled under reflux for 10 minutes and the still hot mixture is introduced into 1 liter of saturated sodium chloride solution, filtered by suction after standing and dried.

Yield: 40 g. of the compound represented by Formula III hereinafter.

8 g. of the osazone of the compound having Formula III are dissolved in 150 cc. of methanol and a quantity of 10% aqueous sodium hydroxide solution required to adjust the solution to a pH value of about 9 and incorporated into 1 kg. of a silver halide emulsion prepared in the usual way. A photographic layer produced with this emulsion mixture is exposed and developed for 5 minutes in a color developer having the composition:

G. Sodium hexaphosphate 1.0 p-Diethylamino aniline sulphate 2.0 Anhydrous sodium sulphite 2.0 Potassium bromide 1.0

Potassium carbonate 75.0 Water to make 1 liter of solution.

bleached with a bleaching bath consisting of 200 g. of potassium ferricyanide in 1 liter of aqueous solution and fixed in the usual way.

A positive yellow dyestutf image is obtained.

Example 2 -The compound represented by Formula II hereinafter is prepared as described in Example 1 by replacing the sulfanilic acid in stage (a) with 4 amino anisidine 2 sulfonic acid, and the 4 methoxy 3 sulphophenyl hydrazine in stage (b) with 4 sulfophenyl hydrazine.

The coupler of Formula II can be used, as described in Example 1, for the production of a positive yellow dyestuff image.

Example 3 The compound represented by Formula IV is prepared as described in Example 1 by replacing the sulfanilic acid of stage (a) with 4 amino diphenylamine 2- sulfonic acid and the 4 methoxy 3 sulfophenyl hydrazine in stage (b) with 2 chloro 5 sulfophenyl hydrazine.

The compound of Formula IV produces a magenta dyestutf image after treatment as described in Example 1. The magenta dyestulf has a maximum absorption band at 535 millimicrons.

Example 4 (a) 4 isododecylchloroacetophenone.35 g. of AlCl are introduced over a period of 30 minutes into a solution of 62 g. of isododecyl benzene and 32 g. of chloroacetyl chloride in cc. of carbon disulphide. The mixture is thereafter heated for 3 hours to its boiling point. The carbon disulphide is distilled off and the mixture is then introduced into 200 cc. of water, 200 g. of ice and 20 cc. of HCl. The precipitated oil is taken up in 100 cc. of methylene chloride, the solution is dried over CaCl and the solvent distilled off. The residue is distilled in vacuo, whereby a shortest possible distillation time is maintained.

B.P.: 0.6 mm. from 180 C. Yield: 40 g.

(b) 6.4 g. of the foregoing compound, 7 g. of sodium acetate and 100 cc. of methanol are heated for 3 hours to its boiling point. 12 g. of 4 sulphophenyl hydrazine and 40 cc. of H are then added and boiling is continued for another 1% hours. The mixture is thereafter introduced into 250 cc. of saturated sodium chloride solution, left to stand for 4 hours, filtered by suction and dried in vacuo. Yield: 7 g. of the compound represented by Formula V.

When used as described in Example 1, this compound yields a positive yellow dyestufl? image.

Example 5 (a) 10.9 g. of 4 ethoxyaniline 3 sulphonic acid were diazotized by the usual method. After destroying the excess nitrite, the diazonium salt solution is adjusted to a pH value of 6 by adding solid sodium acetate. This solution is slowly added with stirring to a solution of 20 g. of stearoylacetic acid ester in 250 cc. of methanol heated to 28 C., stirred for minutes at 28 C., and then cooled and filtered by suction to remove the excess stearoylacetic acid ester. This product is recrystallized from acetone and dried. The dry product is slowly heated to 60 C. with 100 cc. of 2 N NaOH while stirring, kept for minutes at this temperature and then briefly boiled, cooled, filtered with suction, introduced into 10% acetic acid, filtered by suction, stirred while cold with acetone, filtered by suction anddried.

(b) 5.1 g. of the foregoing product, 50 cc. of water, 70 cc. of 10% sodium acetate solution and 3.9 g. of 5- sulfo 2 hydrazine 4 hydroxy 3' carboxydiphenyl sulphone are heated in minutes to 60 C. while stirring, cooled, adjusted to a pH value of 8.3 by dropwise addition of dilute NaOH, whereupon it initially becomes jelly-like and, with further stirring, it solidifies to a precipitate which can be satisfactorily exhausted.

This product has the composition represented by Formula VI. When used as described in Example 1, a positive yellow dyestuft image is obtained.

Example 6 5.1 g. of the product prepared as described in Example 5(a) were heated for 40 minutes to 60 C. with cc. of water, 50 cc. of 10% sodium acetate solution and 3.7 g. of 5 acetamino 2 hydrazino 4' hydroxy 3'- carboxy diphenyl sulphone, adjusted to a pH value of 8 by adding dilute NaOH, cooled and precipitated by adding 500 cc. of 25% sodium chloride solution.

The project is represented by Formula VII.

When used as described in Example 1, a deep redorange colored positive dyestuff image is obtained.

Example 7 4.6 g. of 4 octadecoxy phenyl hydrazine 3 sulphonic acid, 50 cc. of 10% sodium acetate solution, 2 cc. of glacial acetic acid and 0.6 cc. of 50% glyoxal are heated for 1 hour to 45-48 C. while stirring. A red precipitate is formed, which is filtered with suction after cooling and then dried.

Yield: 4.5 g. of the compound represented by Formula VIII.

When used as described in Example 1, a positive reddish-brown dyestufi is obtained. K

Example 8 9.2 g. of 4 octadecoxy phenyl hydrazine 3 sul fonic acid, 100 cc. of 10% sodium acetate solution, 1.2 g. of 3 phenyl propane 2,3 dione are heated for 2 hours at to C. while stirring, cooled, filtered with suction and dried. Yield: 10.1 g. of the compound represented by Formula IX.

When used as described in Example 1, a positive yellow dyestuif image is obtained.

Example 9 9.2 g. of 4 octadecoxy phenyl hydrazine 3 sulfonic acid, cc. of 10% sodium acetate solution, 4 cc.

7 of glacial acetic acid and 1.5 g. of cumarane 2,3 dione- 2,3 dihydrobenzofuran 2,3 dione are heated for 2 hours to 60 to 65 C. while stirring, cooled, filtered with suction and dried. Yield: 7.8 g. of the compound represented by Formula X.

The osazone thus obtained is used and processed as described in Example 1. After fixing, it is washed for another 10 minutes in a 2 N acetic acid solution. A yellow positive dyestuff image is obtained.

Example 10 (a) 8.7 g. of 4-aminobenzene sulphonic acid were diazotized by a conventional method, the excess of nitrite destroyed and the solution adjusted to a pH value of 6 by adding solid sodium acetate.

This solution was added at 0 C. to the solution of 7 g. of 1,1 dimethyl cyclohexane 3,5 dione which is also known as 5,5-dimethyl-1,3-cyclohexanedione, dimedone and methone in 75 cc. of methanol. With the addition, the solution immediately became yellow in color, and after standing overnight in a refrigerator, lemon-yellow crystals precipitated, which were filtered with suction and dried.

(b) 3.2 g. of the above compound (a), 9.2 g. of 4- octadecoxy-phenyl-hydrazine-3-sulphonic acid, 75 cc. of water and 2 N sodium hydroxide solution sufiicient to produce a pH value of 5 are heated for 2 hours on a boiling water bath while stirring; after cooling, 2 N sodium hydroxide solution is added until the pH value is 8 and the reaction product is precipitated by adding 250 cc. of saturated potassium chloride solution. The compound has the composition represented by Formula XI. When used as described in Example 1, a positive brown dyestutf image is obtained.

Example 11 Four (4) grams of Z-acetylcumarone (2-acetylbenzofuran) are converted as described by W. Reid and K. Sommer in Annalen, vol. 611, page 114 (1958), into cumaryl-(2)-glyoxal (Z-glyoxyloylbenzofuran) by oxidation with selenium dioxide. The glyoxyloylbenzofuran thus obtained is heated for half an hour to 60 to 65 C. with 50 cc. of dimethyl formamide, 20 cc. of 2 N sodium acetate solution and 11.4 g. of 4-octadecoxy-phenyl-hydrazine-3-sulphonic acid while stirring on a water bath, whereupon 6.6 g. of 73% phenyl hydrazine-4-sulphonic acid are added, and the reaction mixture is kept for another half an hour at the temperature indicated. After cooling, 50 cc. of water are added to the solution and precipitation is caused by sodium chloride solution. The precipitate is filtered with suction and dried. The com pound has the composition represented by Formula XII. When used as described in Example 1, a positive yellow image is formed.

Example 12 Reaction product of 2-glyoxyloylbenzofuran 4 g. of 2- acetylbenzofuran is oxidized as described in the preceding example to form coumaryl-2-glyoxal. After distilling oil the dioxane, the residue has added thereto 50 cc. of dimethyl formamide, 20 cc. of 2 N sodium acetate solution and 9.2 g. of 4-dodecoxy-phenyl hydrazine-3-sulphonic acid, and the mixture is heated while stirring to 60 to 65 C., whereupon 9.6 g. of 2-hydrazino-4-sulpho-3'- carboxy-4-hydroxy-diphenyl sulphone are added, heating is continued for another half an hour at 75 C., the mixture is cooled and introduced into 25% sodium chloride solution; the product precipitates in greasy form and becomes solid on stirring with sodium chloride solution. It is then filtered with suction and dried.

The compound has the composition represented by Formula VIII and when used in accordance with Ex ample 1, produces a yellow dyestuif image.

Example 13 The compound represented by Formula XIV is prepared by a method analogous to that described in Examples 1 to 3. A light-sensitive material coated upon a transparent support prepared as described in Example 1(b) is developed with the color developer compound disclosed in Example 4 and after subsequent rinsing, it is (a) in one case bleach-fixed in a bleach-fixing bath, as described in Example 5 of German Patent No. 866,605, and (b) in another case, it is treated in a bleaching bath consisting of 100 g. of potassium ferricyanide and g. of sodium carbonate in 1000 cc. of water and fixed in the usual way.

After treatment referred to as (a), a slightly yellowish colored positive image is obtained with a color density of 0.3 measured behind a Schott filter BG 12/2 mm. The treatment referred to as (b) a yellow positive color image is obtained having a maximum color density of 1.65 when measured behind the same filter.

Example 14 (a) 4.5 g. of 4-amino N methyl-N-stearyl-anilinc-2- sulphonic acid are formed into a paste with 40 cc. of methanol and dissolved in 30 cc. of water and 11 cc. of 2. N sodium hydroxide solution at about 50 C. 0.7 g. of sodium nitrite is then added and the still warm solution is so introduced into 30 cc. of ice-cooled 2 N hydrochloric acid that the temperature rises to about C. while the introduction is being carried out. Stirring is continued for 1 hour, the precipitated diazonium salt is filtered off with suction and, while still moist, it is formed into a paste with 60 cc. of methanol.

The suspension of the diazonium salt prepared in this way is introduced at room temperature into a solution of 1.5 g. of a-methyl acetoacetic ester in 60 cc. of methanol and cc. of 2 N sodium hydroxide solution, which had been standing for 24 hours at room temperature. The compound immediately precipitates, is filtered with suction after 30 minutes, triturated with acetone, and then filtered with suction. Yield: 5 g.

(b) 5.4 g. of the compound (a) are dissolved with 1.1 g. of phenyl hydrazine and 5 g. of sodium acetate by brief heating and then left to stand overnight. The solution is formed into a paste with 150 cc. of saturated so dium chloride solution and 100 cc. of water, filtered with suction and dried in vacuo at room temperature.

Yield: 5 g. of the compound according to Formula XV.

Example 15 Sodium hexaphosphate g 1.0 1 phenyl 4 aminopyrazolone 3 carboxylic acid amide g 5.0 Anhydrous sodium sulphite g 2.0 Potassium bromide g 1.0 Anhydrous potassium carbonate g 75.0 Water l 1 After bleaching and fixing as described in Example 1, a positive yellow dyestufi image is obtained.

8 Example 16 4 g. of 2-acetylbenzofuran are oxidized as described in Example 11 to form Z-glyoxylbenzofuran. After distilling oif the dioxane, there are added to the residue 50 cc. of dimethyl formamide, 20 cc. of 2 N sodium acetate solution and 11.4 g. of 4-octadecoxy-phenyl hydrazine-3- sulphonic acid and heated for half an hour while stirring to 60 to 65 C., and after this time there are added 6.2 g. of 4-acetaminophenyl-hydrazine-3-sulphonic acid, and the mixture is heated after 1 hour to 70 C., cooled, precipi tated by adding 25% NaCl solution, filtered with suction and dried (Formula XVII).

8 g. of the compound (Formula XVI'I) are used to prepare as described in Example 4 in a photographic material. It is developed in a developer having the following composition:

After bleaching and fixing as described in Example 1, a positive yellow dyestuff image is obtained.

Example 17 3.7 g. of 2-(4-hydrazinophenyl)-3-dodecyl-benzimidazole-6-sulphonic acid are dissolved while heating in 20 cc. of saturated aqueous sodium acetate solution and 20 cc. of propanol. After adding 0.32 g. of diacetyl, the mixture is heated for about 20 minutes to 70, the cooled solution is diluted with 50 cc. of water and such a quantity of 30% acetic acid is added that the product precipitates. The supernatant liquid is decanted off, the residue is stirred with a small quantity of water, filtered with suction and dried.

Yield: 3.3 g.

The compound which is represented by Formula XVIII, gives a positive yellow image when incorporated into a silver halide emulsion and developed as described in Example 1.

Example 18 A solution of 11.2 g. of 2-(3-hydrazinophenyl)-3- octadecyl-benzimidazole-fi-sulphonie acid and 9 g. of anhydrous sodium acetate in 40 cc. of propanol and 30 cc. of water is stirred for half an hour at 25-30 C. while adding 1.7 g. of diacetyl. 4.6 g. of 4-ethoxy-phenylhydrazine-3-sulphonic acid are then added and a solution is obtained by heating to C. This temperature is maintained for half an hour, the dihydrazone starting to precipitate. The precipitation is completed by cooling and adding 60 cc. of 50% acetic acid, the supernatant solution is decanted and the residue is filtered with suction after stirring with acetone and then dried.

Yield: 9.8 g.

The product (Formula XIX) gives a positive yellow image after being cast in a silver halide emulsion and developed as described in Example 1.

Example 19 (a) 21 g. of 4-aminophenetol sulfonic acid (2) are diazotized in accordance with the method disclosed in Example 1. The resulting diazonium salt solution is adjusted to a pH value of about 6 by addition of sodium acetate and added at 0 C. to a solution of 19.4 g. of isonicotinoyl acetic acid ethyl ester and 16 g. of sodium acetate (anhydrous) in 200 cc. of methanol. Stirring is continued for another 30 rnins. Thereafter 400 cc. of an aqueous 25 sodium chloride solution are added and the faintly yellow precipitate which forms is sucked 01f, dried and recrystallized from acetone.

X)gfield: 25 g., the compound corresponds to Formula (b) The above compound is dissolved in 200 cc. of 1 N sodium hydroxide solution, slowly heated to 60 C., and thereafter kept for 10 minutes at 90 C., cooled with icewater and neutralized by addition of glacial acetic acid. The solution is concentrated by vacuum evaporation and the remaining semi-solid product is treated with warm acetone. After cooling, the solid product which has formed is sucked 011'. Its formula is represented by Formula XXI.

(c) 10 g. of the foregoing compound Formula XXI are mixed with 100 cc. of water, 140 cc. of an aqueous 10% sodium acetate solution and 0.1 g. of 4-octadecoxyphenylhydrazine-3-sulfonic acid (3-sulfo-4-octadecoxyphenylhydrazine). The resulting solution is kept whilst stirring for one hour at 60 C., thereafter cooled with ice-water. The precipitate which has formed is filtered oil with suction and dried. The compound is represented by Formula XXII.

This compound is used as described in Example 1 to produce a silver halide emulsion which upon development forms a positive yellow dyestufi image.

Example 20 3 g. of isatin and 18.3 g. of 4-octadecoxyphenylhydrazine-3-sulfonic acid-3-sulfo-4-octadecoxyphenylhydrazine are mixed with 100 cc. of dimethylformamide and 20 cc. of 2 N aqueous sodium acetate solution. The mixture is heated for 1 hour whilst stirring at 60 to 65 C., thereafter filtered with suction and the filtrate has added thereto sodium chloride to precipitate a compound represented by Formula XXIII. The precipitate is filtered by suction, washed with water and dried in vacuo at room temperature.

The compound is used as described in Example 1 for the production of a positive yellow dyestuif image.

Example 21 The compound represented by Formula XXIV is obtained when in accordance with the method described in Example 1, by replacing in step (a) the sulfanilic acid by an equivalent amount of 4-nitroaniline-3-carbonic acid and in step (b) the 4-methoxy-3-sulfophenylhydrazine, by an equivalent amount of 4-ethoxy-3-sulfophenylhydrazine.

The compound of Formula )QHV as well as the compounds described in the following Examples (22 to 39) are used each formulated into silver halide emulsions which are then developed and produce images as described in Example 1.

Example 22 The compound of Formula XXV is obtained in accordance with the method described in Example 1, by

replacing in step (a) the sulfanilic acid, by an equivalent amount of 2-ethoxynaphthyl amine-G-sulfonic acid and in step (b) the 4-methoxy-3-sulfophenylhydrazine, by an equivalent amount of S-acetamino-Z-hydrazinobenzene-sulfonic acid.

Example 23 The compound of Formula XXVI is obtained in accordance with the method described in Example 1, by replacing in step (a) the sulfanilic acid, by an equivalent amount of 2-ethoxynaphthylamine-6-sulfonic acid and in step (b) the 4-methoxy-3-sulfophenylhydrazine, by an equivalent amount of 4-hydrazino-1-phenoxybenzene-sulfonic acid-(2).

Example 24 The compound of Formula XXVII is obtained in accordance with the method described in Example 1, by replacing in step (a) the sulfanilic acid, by an equivalent amount of 2-amino-l-phenoxy-benzene sulfonic acid and in step (b) the 4-methoxy-3-sulfophenylhydrazine is replaced by an equivalent amount of S-(N-oxalylamino)-2-hydrazino-l-methyl-benzene-sulfonic acid-(4).

Example 25 The compound of Formula XXIX is obtained in accordance with the method described in Example 1, by replacing in step (a) the sulfanilic acid, by an equivalent amount of 4-amino-1-phenoxy-benzene-sulfonic acid-(2) and in step (b) the 4-methoxy-3-sulfophenylhydrazine, by an equivalent amount of 4-hydrazino-l-phenoxy-benzene-sulfonic acid-(2).

Example 27 The compound of Formula XXX is obtained in accordance with the method described in Example 1, by replacing in step (a) the sulfanilic acid, by an equivalent amount of 4-amino-1-phenoxy-benzene-sulfonic acid-(3) and in step (b) the 4-methoxy-3-sulfophenylhydrazine, byan equivalent amount of phenylhydrazine-3-carbonic acid.

Example 28 The compound of Formula XXXI is obtained in accordance With the method described in Example 1, by replacing in step (a) the sulfanilic acid, by an equivalent amount of 4-amino-1-phenoxybenzene-sulfonic acid-(2) and in step (b) the 4-methoxy-3-sulfophenylhydrazine, by an equivalent amount of 4-ethoxyphenyl-hydrazinesulfonic acid-(3).

Example 29 The compound of Formula XXXII is obtained in accordance With the method described in Example 1, by replacing in step (a) the sulfanilic acid, by an equivalent amount of 4-amino-l-phenoxybenzene-sulfonic acid-(2) and in step (b) the 4 rnethoxy-3-sulfophenylhydrazine, by an equivalent amount of 1-methyl-2-hydrazinobenzene- 4,5-disulfonic acid.

Example 30 The compound of Formula XXXIII is obtained in accordance with the method described in Example 1, by replacing in step (a) the sulfanilic acid, by an equivalent amount of 2-ethoxy-naphthylamineb-sulfonic acid and in step (b) the 4-methoxy-3-sulfophenylhydrazine, by an equivalent amount of phenylhydraZirre-S-sulfonic acid.

Example 31 The compound of Formula XXXIV is obtained in accordance With the method described in Example 1, by replacing in step (a) the sulfanilic acid, by an equivalent amount of 2-ethoxynaphthylamin-6-sulfonic acid and in step (b) the 4-methoxy-3-sulfophenylhydrazine, by an equivalent amount of phenylhydrazine-3-carbonic acid.

Example 32 The compound of Formula XXV is obtained in accordance with the method described in Example 1, by

, replacing in step (a) the sulfanilic acid, by an equivalent amount of Z-nitr-aniline-4-sulfonic acid and in step (b) the 4-methoxy-3-sulfophenylhydrazine, by an equivalent amount of 4-ethoxy-phenylhydrazine-3-sulfonic acid.

Example 33 The compound of Formula XXXVI is obtained in accordance with the method described in Example 1, by replacing in step (a) the sulfanilic acid, by an equivalent amount of 3-nitraniline-4-sulfonic acid and in step (b) the 4-methoxy-3-sulfopheny1hydrazine-3-sulfonic acid.

11 Example 34 The compound of Formula XXXVII is obtained in accordance with the method described in Example 1, by replacing in step (a) the sulfanilic acid, by an equivalent amount of 4-amino-l-phenoxy-Z-sulfonic acid and in step (b) the 4-methoxy-3-sulfophenylhydrazine, by an equivalent amount of -oxalyl-amino-Z-hydrazino-benzene-sul- 'fonic acid-(1).

Example 35 The compound of Formula XXXVIII is obtained in accordance with the method described in Example 1, by replacing in step (a) the sulfanilic acid, by an equivalent amount of 4-amino-l-phenoxy-sulfonic acid-(2) and in step (b) the 4-methoxy-3-sulfophenylhydrazine, by an equivalent amount of phenyl-hydrazine-3-w-methane-sulfonic acid.

Example 36 The compound of Formula XXXD( is obtained in accordance with the method described in Example 1, by replacing in step (a) the sulfanilic acid, by an equivalent amount of 4-amino-1-phenoxy-benzene-sulfonic acid-(2) and in step (b) the 4-methoxy-3-sulfopheny1hydrazine by an equivalent amount of phenyI-hydrazine-4-sulfonamide.

Example 37 The compound of Formula XL is obtained in accordance with the method described in Example 1 by replacing in step (a) the sulphanilic acid by an equivalent amount of Z-ethoxynaphthylamine-fi-sulfonic acid and in step (b) the 4-methoxy-3-sulphophenyl-hydrazine, by an equivalent amount of 4-ethoxy-phenyl-hydrazine-3-sulphonic acid.

Example 38 The compound of Formula XLI is obtained in accordance with the method described in Example 1 by replacing in step (a) the sulphanilic acid, by an equivalent amount of 4-aminodiphenylamine-3-sulfonic acid and in step (b) the 4-methoxy-3-sulphophenylhydrazine, by an equivalent amount of benzthiazolylhydrazino-5-sulphonic acid.

Example 39 Arranged on a film support are (a) a red sensitive gelatin silver bromo-iodide emulsion layer having incorporated therein a diffusion-resistant cyan coupler, for example, 4-sulfo-l-naphthol-2-carboxylic acid from stearyl anilide, thereupon (b) a green sensitive gelatin silver bromo-iodide emulsion layer having incorporated therein a diffusion-resistant magenta coupler, for example, l-(4-sulphophenyl)-3- palmityl-pyrazolone-(S) thereupon (c) a green sensitive gelatin silver bromo-iodide emulsion containing per liter of emulsion g. of the compound of Formula VI in the form of the sodium salt, thereupon (d) a yellow filter layer containing colloidal silver, thereupon (e) a blue sensitive gelatin silver bromo-iodide emulsion layer having incorporated therein a diffusion-resistant yellow coupler, for example, 4-stearylamido-benzoyl acetic acid-amido-isophthalic acid.

The photographically exposed multi-layer material is developed in a color developer having the following composition:

Development is followed by application of a bleaching bath consisting of a percent aqueous solution of SOaH 600 (BCHa IV CH nHas-C ii I NH NH JJOOH 1 TH H SO H What is claimed is: 1. A compound of the formula wherein R and R are defined as a hydrogen, alkyl having up to 20 carbon atoms, phenyl, naphthyl, benzyl and heterocyclic radicals selected from the group consisting of furyl, thienyl coumaronyl, thionaphthenyl and pyridyl, R and R together with the connecting carbon atoms being further defined as a -6 membered ring comprising cyclopentanedione, cyclohexanedione, benzofurane and indolyl moiety; R and R are members selected from the group consisting of a phenyl, naphthyl, pyridyl, benzthiazolyl, thiazolyl, oxazolyl, benzimidazolyl, pyrazolyl and thienyl; R R R or R containing a substituent radical selected from the group consisting of alkyl of 6-20 carbon atoms, alkoxy of 6-20 carbon atoms, and alkyl amino having an alkyl group containing up to 20 carbon atoms when R is defined other than alkyl having 6-20 carbon atoms.

2. A compound of the formula wherein R and R are individually defined as members selected from the group consisting of hydrogen, alkyl of 1-20 carbon atoms, phenyl, naphthyl, alkyl phenyl, furyl, thienyl, 2-benzofuranyl, benzothienyl and pyridyl; R and R together with the connecting carbon atoms being further defined as a 5-6 membered ring comprising cyclopentanedione, cyclohexanedione, bcnzofurane and indolyl moiety; R is defined as naphthyl or phenyl radicals substituted by members selected from the group consisting of sulfonic acid, alkoxy, N-phenylamino, carboxy-hydroxy phenyl sulfonyl, dialkylamino, 3-alkyl-benzimidazole-6-sulfonic acid, nitro, carboxy, phenoxy, chloro, methyl and phenylamino; and R is naphthyl, phenyl or substituted naphthyl or phenyl radicals having, as substituent groups, members selected from the group consisting of sulfonic acid, alkoxy, chloro, carboxy-hydroxyphenyl sulfonyl, acetamido, methylphenylsulfonyl, 3-alkylbenzimidazole-G-sulfonic acid, phenoxy, N-oxalylamino, carboxy, methyl, methyl sulfonic acid, sulfamino, and benzthiazoyl-hydrazino-5-sulfonic acid.

3. A compound as defined in claim 1, wherein at least one of R and R contain a sulfo substituent.

4. A compound of the formula ll NH 5. A compound of the formula OCH;

6. A compound of the formula (PEI Cums- I NE E 7. A compound of the formula COOH S0 11 8. A compound of the formula i1 za| -(|JH 111K NH NHCOCH:

9. A compound of the formula Cl'l 36 l CHaCONH I lH NH 21 22 10. A compound of the formula 12. A compound of the formula C11 ssC -CH S0311 'll; C H fiCH=NNH 001m 5 Y3 NH I? H0 8 06:11:, NE cH3-s0- $0311 6:0 11. A compound of the formula (3H1 15 References Cited ,f UNITED STATES PATENTS V 3,162,643 12/1964 Schellenberger et 'al. 260-305 NH NH 20 OTHER REFERENCES Henseke et aL, Chem. Ber. vol. 88, pp. 1170 to 1177 H033 COOH (1955) QD 1D4.

| JOHN D. RANDOLPH, Primary Examiner. CzHg N03 UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3 ,378 ,554 April 16 1968 Walter Puschel et al.

It is certified that error appears in the above identified patent and that said Letters Patent are hereby corrected as shown below:

Column 3, line 45, the equation should appear as shown below Column 6, line 5, "2,3-dihydrobenzofuran-2,3-dione are heated for 2" should read (dihydrobenzofuran-Z,S-dione) are heated for 2 line 61, cancel "Reaction product of Z-glyoxyloylbenzofuran". Column 9, lines 24 and 25, "hydrazine-S-sulfonic acid-3-sulfo-4octadecoxyphenylhydrazine are mixed with 100 cc. of dimethylformamide and" should read hydrazine-S-sulfonic acid (3-sulfo4-octadecoxyphenylhydrazine) are mixed with 100 cc. of dimethylformamide and Column 11, line 49, "boxylic acid from stearyl anilide, thereupon" should read boxylic acid stearylamide thereupon Column 12, lines 20 to 25, the formula should appear as shown below:

I N I N same column 12, lines 55 to 64, the upper left-hand portion of the formula should appear as shown below:

Column 13, lines 40 to 45, the left-hand portion of the formula should appear as shown below: g

O-FJ

II II same column 13, lines 50 to 65, the formula should appear as show below:

CH CH CH? W! CH l C=N-NH 06181-137 SO H Column 15, first compound, replace the oxygen atom (O) in the left-hand rings with a nitrogen atom N Column 16, lines 32 to 45, the formula should appear as shown below:

17 35 El F NH NH SO3H 1TH SO H Column 17, lines 65 to 75, the lower left-hand portion of the formula should appear as shown below:

OC H

Signed and sealed this 3rd day of "May-Ch 1970 (SEAL) Attest:

EDWARD M.FLETCHER,JR. WILLIAM E. SCHUYLER, JR.

Attesting Officer Commissioner of Patents 

1. A COMPOUND OF THE FORMULA
 2. A COMPOUND OF THE FORMULA 